This mod lets you pick which stadium event you want to play (Hotring, Bloodring or Dirtring) and allows you to start the event regardless of what time it is. This mod should be especially useful if your game is bugged like mine and doesn't switch the event by itself every day during normal conditions. But also if you just feel like playing one of these missions at any time.
I tested it a lot, hopefully it's bug-free.

-Update 1 - version 1.2: Made it so that scrolling through the 3 events isn't so fast.